diff options
author | Tanya Brokhman <tlinder@codeaurora.org> | 2014-04-01 04:01:12 -0400 |
---|---|---|
committer | Artem Bityutskiy <artem.bityutskiy@linux.intel.com> | 2014-05-05 02:31:33 -0400 |
commit | 87ed89d21ede38f86be9419ca7c6dd4761764bbb (patch) | |
tree | 465df391e8858ae8575a2bf72815e4302ab83386 /drivers/mtd/ubi/wl.c | |
parent | fcdd57c8902a936a616df2066d873b38ef3ed364 (diff) |
UBI: fix error path in __wl_get_peb
In case of an error (if there are not free PEB's for example),
__wl_get_peb will return a negative value. In order to prevent access
violation we need to test the returned value prior to using it later on.
Signed-off-by: Tatyana Brokhman <tlinder@codeaurora.org>
Reviewed-by: Dolev Raviv <draviv@codeaurora.org>
Acked-by: Richard Weinberger <richard@nod.at>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Diffstat (limited to 'drivers/mtd/ubi/wl.c')
-rw-r--r-- | drivers/mtd/ubi/wl.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/mtd/ubi/wl.c b/drivers/mtd/ubi/wl.c index 02317c1c0238..457ead32105c 100644 --- a/drivers/mtd/ubi/wl.c +++ b/drivers/mtd/ubi/wl.c | |||
@@ -684,6 +684,9 @@ int ubi_wl_get_peb(struct ubi_device *ubi) | |||
684 | peb = __wl_get_peb(ubi); | 684 | peb = __wl_get_peb(ubi); |
685 | spin_unlock(&ubi->wl_lock); | 685 | spin_unlock(&ubi->wl_lock); |
686 | 686 | ||
687 | if (peb < 0) | ||
688 | return peb; | ||
689 | |||
687 | err = ubi_self_check_all_ff(ubi, peb, ubi->vid_hdr_aloffset, | 690 | err = ubi_self_check_all_ff(ubi, peb, ubi->vid_hdr_aloffset, |
688 | ubi->peb_size - ubi->vid_hdr_aloffset); | 691 | ubi->peb_size - ubi->vid_hdr_aloffset); |
689 | if (err) { | 692 | if (err) { |